Allocated but unannounced space
Every block here was allocated or assigned by a regional internet registry, and none of them appeared in any routing table we collected at our last snapshot — neither as a route of their own, nor covered by a larger announcement, nor carved up into more specifics.
“Unannounced” does not mean “unused”
Plenty of allocated space is deliberately kept off the public internet: private interconnects, lab and lawful-intercept ranges, networks reachable only inside one operator, and space held in reserve. Some of it is announced somewhere our collectors cannot see, which is a limit of our vantage points rather than a fact about the block.
It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today. Nothing on this page means a block is unallocated, available, or free to announce.
Browse by registry
Browse by country
Countries with the most unannounced blocks, largest first.
Unannounced blocks in Australia
2,394 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 103.233.242.0/24 | 256 | APNIC | 16th Jun 2014 | |
| 103.233.28.0/23 | 512 | APNIC | 4th Jun 2014 | |
| 103.234.14.0/23 | 512 | APNIC | 18th Jun 2014 | |
| 103.234.163.0/24 | 256 | APNIC | 25th Jun 2014 | |
| 103.235.154.0/24 | 256 | APNIC | 9th Jul 2014 | |
| 103.235.36.0/22 | 1k | APNIC | 2nd Jul 2014 | |
| 103.236.202.0/24 | 256 | APNIC | 10th Sept 2015 | |
| 103.238.195.0/24 | 256 | APNIC | 30th Jul 2014 | |
| 103.239.106.0/23 | 512 | APNIC | 5th Aug 2014 | |
| 103.239.166.0/23 | 512 | APNIC | 7th Aug 2014 | |
| 103.239.212.0/24 | 256 | APNIC | 8th Aug 2014 | |
| 103.245.146.0/24 | 256 | APNIC | 17th Jan 2013 | |
| 103.246.136.0/22 | 1k | APNIC | 23rd Aug 2011 | |
| 103.246.235.0/24 | 256 | APNIC | 5th Sept 2011 | |
| 103.246.32.0/22 | 1k | APNIC | 5th Jul 2011 | |
| 103.249.220.0/22 | 1k | APNIC | 11th Jun 2013 | |
| 103.25.212.0/22 | 1k | APNIC | 8th May 2013 | |
| 103.25.221.0/24 | 256 | APNIC | 9th May 2013 | |
| 103.250.8.0/24 | 256 | APNIC | 11th Jul 2013 | |
| 103.251.4.0/22 | 1k | APNIC | 25th Jul 2013 | |
| 103.251.64.0/22 | 1k | APNIC | 29th Jul 2013 | |
| 103.252.8.0/23 | 512 | APNIC | 7th Jan 2016 | |
| 103.254.6.0/24 | 256 | APNIC | 26th Nov 2013 | |
| 103.254.90.0/24 | 256 | APNIC | 3rd Dec 2013 | |
| 103.255.249.0/24 | 256 | APNIC | 8th Jan 2014 | |
| 103.255.48.0/22 | 1k | APNIC | 20th Dec 2013 | |
| 103.255.78.0/23 | 512 | APNIC | 27th Dec 2013 | |
| 103.26.60.0/22 | 1k | APNIC | 18th Jun 2013 | |
| 103.26.68.0/22 | 1k | APNIC | 18th Jun 2013 | |
| 103.27.188.0/22 | 1k | APNIC | 8th Jul 2013 | |
| 103.27.196.0/22 | 1k | APNIC | 9th Jul 2013 | |
| 103.27.76.0/22 | 1k | APNIC | 4th Nov 2015 | |
| 103.27.92.0/22 | 1k | APNIC | 2nd Jul 2013 | |
| 103.29.100.0/22 | 1k | APNIC | 24th Jun 2011 | |
| 103.29.112.0/24 | 256 | APNIC | 27th Jun 2011 | |
| 103.29.160.0/23 | 512 | APNIC | 9th Aug 2011 | |
| 103.29.43.0/24 | 256 | APNIC | 13th May 2011 | |
| 103.30.120.0/24 | 256 | APNIC | 5th Nov 2012 | |
| 103.30.184.0/22 | 1k | APNIC | 12th Nov 2012 | |
| 103.30.216.0/22 | 1k | APNIC | 27th Jul 2016 | |
| 103.39.250.0/24 | 256 | APNIC | 26th Sept 2014 | |
| 103.39.86.0/23 | 512 | APNIC | 22nd Sept 2014 | |
| 103.4.120.0/24 | 256 | APNIC | 7th Jun 2011 | |
| 103.4.212.0/22 | 1k | APNIC | 15th Jul 2011 | |
| 103.42.132.0/22 | 1k | APNIC | 6th Nov 2014 | |
| 103.43.137.0/24 | 256 | APNIC | 24th Nov 2014 | |
| 103.43.177.0/24 | 256 | APNIC | 26th Nov 2014 | |
| 103.44.101.0/24 | 256 | APNIC | 5th Dec 2014 | |
| 103.44.228.0/22 | 1k | APNIC | 11th Dec 2014 | |
| 103.46.220.0/22 | 1k | APNIC | 19th Dec 2014 |